2.1.3.1.1.20.27.1 Parameter: FMTTYPE
RFC Reference: [RFC2445] section 4.2.8
Number of Instances Allowed: 0, 1
Format: Text ([RFC2445] section 4.3.11)
Brief Description: Specifies the text format of the X-ALT-DESC property.
Importing to and Exporting from Calendar objects
See section 2.1.3.1.1.20.27.